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Re: [libvirt] how to use macvtap in kvm guest

On 12/09/2011 12:28 PM, Amit Tewari wrote:



I am creating macvtap0 interface on my eth1 interface.

ip link show macvtap0

133: macvtap0 eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UNKNOWN qlen 500

    link/ether 3e:63:18:f3:49:63 brd ff:ff:ff:ff:ff:ff


guest interface file-


<interface type='direct'>

      <mac address='3e:63:18:f3:49:63'/>

      <source dev='eth0' mode='bridge'/>

      <model type='virtio'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>


Now when I do-

Virsh define guest works fine

But when I do virsh start guest

can guest gain ip?


Dmesg shows error


macvtap0:no ipv6 routers present

libvirtd[24907]: segfault at 0 ip 0000003e22280062 sp 00007fd3057f8cb8 error 4 in libc-2.12.so[3e22200000+187000]

and even if guest starts its eth interface is not created

could you provide your host os, guest os, libvirt, qemu-kvm version?
it is fine as i tried, no segment fault message and the guest can get ip.

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